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AI21 Labs Pay As You Go

Individual plan

View sources and verification

Usage based API

API availability: Unverified · Reference only; excluded from purchase recommendations

Billed by usage; no assumed monthly cost

Plan identity, price and entitlements are unverified

View purchase channels ↓

Free Trial — officially advertised terms

USD 10 API trial credits · 7 days validity · No credit card required

Trial credits for new users, separate from model rates; not a permanently free plan.

Redemption and API access are unverified. Reference terms only, excluded from confirmed redeemable offers.

The current pricing page says 7 days; the older usage-cost document says three months. The current pricing page is used without extending the trial. Conflicting source ↗

Current official pricing source ↗ · Verified: 2026-10-15T08:09:20Z

Understand the fit and limits

Use cases

Reference information and cost comparisons only; excluded from default purchasable API recommendations until availability is confirmed.

Keep in mind

Official prices and API documentation remain public. Studio signup and billing redirect to the marketing website; the unauthenticated models endpoint returns an empty list. New registration, purchase and authenticated inference were not verified. No official whole-service termination notice was verified.

Entitlements and usage

Allowance
Pay per input and output token; no fixed monthly fee published
Benefits
Foundation Model APIs SDK access Usage-based pricing Unlimited seats
Models listed in source
Jamba Mini, Jamba Large
Tool compatibility and access
ai21 sdk: Unverified — Official SDK documentation is present; current authenticated inference is unverified.
Purchase eligibility and channels
Global · Unverified · api_access · unknown · Current API registration, purchase and authenticated callability are unverified. Do not treat reference pricing as a confirmed purchasing offer.
Source notes and limits
Officially advertised service details. API registration, purchasing and authenticated inference are unverified. Maestro is a separate product scope; its billing tariff and sharing of trial credits are not verified.

API input and output pricing

API models and prices · 1

Usage-based billing: text rates are usually per million tokens; other units and tiers are stated per entry. Compare only the same currency, unit and billing conditions. Unverified cache pricing does not mean free.

Jamba Mini

Official model ID: jamba-mini

Model developer: AI21 Labs · Service provider: AI21 Labs · Market: com

Model family: Jamba · Currency: USD

Rates per million tokens
Price dimensionReference rate / 1M tokens
InputUSD 0.2
OutputUSD 0.4

Official reference rates per million input/output tokens. Current API purchasing and callability are unverified.

Documented API context: 256K · Official rounded display; exact token count unverified

Version / snapshot: 2 / jamba-mini-2-2026-01

Aliases: jamba-mini · jamba-mini-2 · jamba-mini-2-2026-01

Input / output modalities: text → text

Billing provider: AI21 Labs

Use cases: Long-context document processing; Enterprise RAG; Text generation; Information extraction; Enterprise model deployment; API integration

Open weights / self-hosted

ai21labs/AI21-Jamba2-Mini ↗

Requires your own compute and license compliance; does not imply a free hosted API.

Apache-2.0 ↗

Apache-2.0 model weights. Self-hosting requires compute and compliance with the license.

Historical and deprecated models (excluded from current recommendations)
  • jamba-mini-1.7-2025-08 · deprecated · 2026-02-01

    Official snapshot column says 2025-07 while endpoint suffix says 2025-08; preserved verbatim.

  • jamba-large-1.6-2025-03 · deprecated · 2025-08-03
  • jamba-mini-1.6-2025-03 · deprecated · 2025-08-03
  • jamba-large-1.5-2024-08 · deprecated · 2025-05-06
  • jamba-mini-1.5-2024-08 · deprecated · 2025-05-06

Official sources: docs.ai21.com/docs/jamba-foundation-models ↗ · huggingface.co/ai21labs/AI21-Jamba2-Mini ↗

Official prices and API documentation remain public. Studio signup and billing redirect to the marketing website; the unauthenticated models endpoint returns an empty list. New registration, purchase and authenticated inference were not verified. No official whole-service termination notice was verified.

Official source · Last verified: 2026-10-15T08:08:35.221Z

API models and prices · 1

Usage-based billing: text rates are usually per million tokens; other units and tiers are stated per entry. Compare only the same currency, unit and billing conditions. Unverified cache pricing does not mean free.

Jamba Large

Official model ID: jamba-large

Model developer: AI21 Labs · Service provider: AI21 Labs · Market: com

Model family: Jamba · Currency: USD

Rates per million tokens
Price dimensionReference rate / 1M tokens
InputUSD 2
OutputUSD 8

Official reference rates per million input/output tokens. Current API purchasing and callability are unverified.

Documented API context: 256K · Official rounded display; exact token count unverified

Version / snapshot: 1.7 / jamba-large-1.7-2025-07

Aliases: jamba-large · jamba-large-1.7 · jamba-large-1.7-2025-07

Input / output modalities: text → text

Billing provider: AI21 Labs

Use cases: Long-context document processing; Enterprise RAG; Text generation; Information extraction; Enterprise model deployment; API integration

Open weights / self-hosted

ai21labs/AI21-Jamba-Large-1.7 ↗

Requires your own compute and license compliance; does not imply a free hosted API.

Jamba Open Model License ↗

Jamba Open Model License; commercial use is restricted above USD 50 million aggregate annual revenue. Gated weights require accepting conditions.

Historical and deprecated models (excluded from current recommendations)
  • jamba-mini-1.7-2025-08 · deprecated · 2026-02-01

    Official snapshot column says 2025-07 while endpoint suffix says 2025-08; preserved verbatim.

  • jamba-large-1.6-2025-03 · deprecated · 2025-08-03
  • jamba-mini-1.6-2025-03 · deprecated · 2025-08-03
  • jamba-large-1.5-2024-08 · deprecated · 2025-05-06
  • jamba-mini-1.5-2024-08 · deprecated · 2025-05-06

Official sources: docs.ai21.com/docs/jamba-foundation-models ↗ · huggingface.co/ai21labs/AI21-Jamba-Large-1.7 ↗

Official prices and API documentation remain public. Studio signup and billing redirect to the marketing website; the unauthenticated models endpoint returns an empty list. New registration, purchase and authenticated inference were not verified. No official whole-service termination notice was verified.

Official source · Last verified: 2026-10-15T08:08:35.221Z

AI Model API Provider · Global

Official website ↗

Maestro is a separate product. Its pricing and any shared trial credits are unverified; these rates apply only to Jamba.

Choose a purchase channel

AI21 Labs Pay As You Go · Individual plan · Usage based

Payment is completed with the provider. Final prices, eligibility and after-sales terms are set by the purchase page.

Sources and verification

View original source ↗

Last fact check: 2026-10-15

Data generation is not a fact check. If information differs, check the latest official source.

Frequently asked questions

How much does AI21 Labs Pay As You Go cost?
AI21 Labs Pay As You Go is priced at Usage based API · Billed by usage; no assumed monthly cost.
Which models does AI21 Labs Pay As You Go support?
Representative models: Jamba Mini, Jamba Large.
When was AI21 Labs Pay As You Go's price last verified?
CreditsPlan last verified this plan on 2026-10-15 against www.ai21.com; the vendor's official site prevails.